{"product_id":"optoma-zk431st-b-4k-golf-simulator-projector-4100-lumens","title":"Optoma ZK431ST-B - 4K UHD Golf Simulator Projector | 4100 Lumens","description":"\u003cp\u003e\u003cstrong\u003eTrue 4K Clarity. Ultra-Short Throw. Built for Space-Constrained Sim Rooms.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eOptoma ZK431ST-B\u003c\/strong\u003e brings native 4K UHD resolution to golf simulators with a \u003cstrong\u003e0.496:1 ultra-short throw ratio\u003c\/strong\u003e — the tightest throw in Optoma's 4K lineup. Project a massive 100\" image from just 1.3 feet away, making it ideal for tight garages, basements, and purpose-built bays where mounting distance is limited.\u003c\/p\u003e\n\n\u003cp\u003eAt \u003cstrong\u003e4,100 lumens\u003c\/strong\u003e of DuraCore laser brightness, the ZK431ST-B delivers vivid, lights-on performance without washing out. The dedicated \u003cstrong\u003eGolf Sim picture mode\u003c\/strong\u003e is tuned specifically for simulator software like GSPro, rendering sharp fairways, readable overlays, and detailed course textures exactly as designed.\u003c\/p\u003e\n\n\u003cp\u003ePowered by Optoma's \u003cstrong\u003eDuraCore laser technology\u003c\/strong\u003e with a 30,000-hour lifespan, the ZK431ST-B requires zero lamp replacements and maintains consistent brightness for years of maintenance-free operation. For golfers who want true 4K image quality in a compact, easy-to-install package.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003eNative 4K UHD Resolution (3840 × 2160)\u003c\/strong\u003e\u003cbr\u003e\n8.3 million on-screen pixels deliver sharper fairways, clearer greens, and more legible simulator data than 1080p projectors.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003eTightest Throw in 4K Class (0.496:1)\u003c\/strong\u003e\u003cbr\u003e\nProject a 100\" image from just 1.3 feet away. Perfect for space-constrained sim rooms where typical short-throw projectors won't fit.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003e4,100 Lumens Laser Brightness\u003c\/strong\u003e\u003cbr\u003e\nBright enough for lights-on play in home golf simulators or commercial entertainment spaces. No washout in controlled ambient light.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003eGolf Sim Mode with GSPro Tuning\u003c\/strong\u003e\u003cbr\u003e\nThe Optoma Smart Control app includes display tuning specifically optimized for GSPro and other third-party simulation software.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003e30,000-Hour DuraCore Laser\u003c\/strong\u003e\u003cbr\u003e\nZero lamp replacements. Instant on\/off. Consistent brightness and color performance across the entire lifespan.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003eSmart Setup from Your Phone\u003c\/strong\u003e\u003cbr\u003e\nThe Optoma Smart Control app (iOS\/Android) guides screen alignment, adjusts geometry with Smart Fit, and provides full projector control.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003eFour-Corner Correction \u0026amp; 360° Projection\u003c\/strong\u003e\u003cbr\u003e\nDial in a perfect fit on any screen from 36\" to 300\". Install in any orientation — ceiling, floor, or portrait.\u003c\/p\u003e\n\n\u003cp\u003e✔ \u003cstrong\u003eCompact, Golf-Sim-Specific Design\u003c\/strong\u003e\u003cbr\u003e\nThe \"-B\" model is Optoma's golf simulator variant with integrated Golf Sim mode and optimized color profiles.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWho Is This For?\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e✅ \u003cstrong\u003eGolfers who want 4K resolution\u003c\/strong\u003e without paying flagship prices\u003cbr\u003e\n✅ \u003cstrong\u003eSpace-constrained installations\u003c\/strong\u003e where projector distance is extremely limited\u003cbr\u003e\n✅ \u003cstrong\u003eDedicated simulator rooms\u003c\/strong\u003e with controlled lighting\u003cbr\u003e\n✅ \u003cstrong\u003eGSPro users\u003c\/strong\u003e who want optimized display tuning\u003cbr\u003e\n✅ \u003cstrong\u003eDIY installers\u003c\/strong\u003e looking for easy phone-based setup and alignment\u003cbr\u003e\n✅ \u003cstrong\u003eUpgraders from 1080p\u003c\/strong\u003e who notice the resolution difference on larger screens\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTechnology:\u003c\/strong\u003e Single-chip DLP\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNative Resolution:\u003c\/strong\u003e 4K UHD (3840 × 2160)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePixel Count:\u003c\/strong\u003e 8.3 million (True 4K, CTA approved)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHDR Support:\u003c\/strong\u003e HDR10, HLG (Hybrid Log Gamma)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAspect Ratio:\u003c\/strong\u003e 16:9\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eBrightness \u0026amp; Light Source\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrightness:\u003c\/strong\u003e 4,100 lumens (ISO 21118)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLight Source:\u003c\/strong\u003e DuraCore Laser\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLight Source Life:\u003c\/strong\u003e Up to 30,000 hours\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eLens \u0026amp; Throw\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThrow Ratio:\u003c\/strong\u003e 0.496:1 (fixed, ultra-short throw)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eScreen Size Range:\u003c\/strong\u003e 36\" – 300\" diagonal\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e100\" Screen Distance:\u003c\/strong\u003e Approximately 1.3 feet\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eKeystone Correction:\u003c\/strong\u003e ±15° vertical \/ horizontal\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFour-Corner Correction:\u003c\/strong\u003e Yes\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProjection Orientation:\u003c\/strong\u003e 360° (floor, ceiling, portrait)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eConnectivity \u0026amp; Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHDMI:\u003c\/strong\u003e Yes (multiple inputs)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eControl:\u003c\/strong\u003e RS232, RJ45 LAN\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBuilt-in Speaker:\u003c\/strong\u003e Yes\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eControl Systems:\u003c\/strong\u003e AMX, Crestron RoomView, Extron compatible\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOTA Updates:\u003c\/strong\u003e Yes (over-the-air firmware updates)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eSoftware \u0026amp; Apps\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptoma Smart Control App:\u003c\/strong\u003e iOS and Android\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSmart Fit:\u003c\/strong\u003e Camera-based auto screen alignment\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSmart Move:\u003c\/strong\u003e Obstacle detection and image repositioning\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptoma Management Suite (OMS):\u003c\/strong\u003e Cloud-based or LAN device management\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePicture Modes:\u003c\/strong\u003e Golf Sim, Cinema, Presentation, and more\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e3D Support:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Mounting\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe ZK431ST-B's ultra-short throw design enables installation in extremely tight spaces:\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThrow Distance:\u003c\/strong\u003e 100\" screen from ~1.3 feet. This is significantly closer than typical short-throw projectors.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCeiling Mount:\u003c\/strong\u003e Compact form factor (up to 34% smaller than previous Optoma 4K models) simplifies installation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAlignment:\u003c\/strong\u003e Smart Fit feature uses your smartphone camera to detect the screen frame and automatically correct image alignment.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSmart Move:\u003c\/strong\u003e Automatically detects obstacles and repositions the projection to a clear, unobstructed area.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOrientation:\u003c\/strong\u003e 360° projection allows any mounting angle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe \"-B\" Designation:\u003c\/strong\u003e The ZK431ST-B is Optoma's golf simulator variant of the ZK431ST. It includes integrated Golf Sim picture mode and is marketed specifically for simulation applications.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eGolf Simulator Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe ZK431ST-B works with all major golf simulation software and launch monitors:\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSoftware:\u003c\/strong\u003e GSPro (with dedicated Smart Control tuning), E6 Connect, TGC 2019, Awesome Golf, Creative Golf, and more\u003cbr\u003e\n\u003cstrong\u003eLaunch Monitors:\u003c\/strong\u003e SkyTrak, Garmin R10\/R50, Mevo+, FlightScope, Rapsodo, Foresight, GolfJoy, Uneekor, and any monitor with HDMI output\u003c\/p\u003e\n\n\u003cp\u003eThe Optoma Smart Control app provides purpose-built display tuning for third-party golf simulation software, delivering more realistic, visually accurate, and immersive experiences.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eZK431ST-B vs. Other Optoma Golf Sim Projectors\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003ctable\u003e\n    \u003ctr\u003e\n        \u003cth\u003eSpecification\u003c\/th\u003e\n        \u003cth\u003eGT2400HDR\u003c\/th\u003e\n        \u003cth\u003eZK431ST-B\u003c\/th\u003e\n        \u003cth\u003eZK521ST-B\u003c\/th\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003eResolution\u003c\/td\u003e\n        \u003ctd\u003e1080p Full HD\u003c\/td\u003e\n        \u003ctd\u003e4K UHD\u003c\/td\u003e\n        \u003ctd\u003e4K UHD\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003eBrightness\u003c\/td\u003e\n        \u003ctd\u003e4,200 lumens\u003c\/td\u003e\n        \u003ctd\u003e4,100 lumens\u003c\/td\u003e\n        \u003ctd\u003e5,000 lumens\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003eThrow Ratio\u003c\/td\u003e\n        \u003ctd\u003e0.496:1\u003c\/td\u003e\n        \u003ctd\u003e0.496:1\u003c\/td\u003e\n        \u003ctd\u003e0.79:1\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003e100\" Distance\u003c\/td\u003e\n        \u003ctd\u003e~4 feet\u003c\/td\u003e\n        \u003ctd\u003e~1.3 feet\u003c\/td\u003e\n        \u003ctd\u003e~5.8 feet\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003eHDR Support\u003c\/td\u003e\n        \u003ctd\u003eHDR10, HLG\u003c\/td\u003e\n        \u003ctd\u003eHDR10, HLG\u003c\/td\u003e\n        \u003ctd\u003eHDR10, HLG\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n        \u003ctd\u003eMAP Price\u003c\/td\u003e\n        \u003ctd\u003e$1,299\u003c\/td\u003e\n        \u003ctd\u003e$1,799\u003c\/td\u003e\n        \u003ctd\u003e$2,699\u003c\/td\u003e\n    \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eChoose the ZK431ST-B\u003c\/strong\u003e if you want true 4K resolution with the tightest throw ratio — ideal for extremely space-constrained installations.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eChoose the GT2400HDR\u003c\/strong\u003e if budget is the priority and 1080p resolution meets your needs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eChoose the ZK521ST-B\u003c\/strong\u003e if you need both 4K resolution AND maximum brightness (5,000 lumens) for brighter rooms or commercial applications.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWhen 4K Matters\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eNative 4K UHD delivers four times the pixel count of 1080p (8.3 million vs. 2.1 million pixels). The difference is most noticeable on:\u003c\/p\u003e\n\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLarger screens:\u003c\/strong\u003e 120\"+ screens benefit significantly from 4K's added detail\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCloser viewing distances:\u003c\/strong\u003e If you're standing 8-10 feet from the screen, 4K sharpness is visible\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSimulator overlays:\u003c\/strong\u003e Club data, shot metrics, and course maps render with cleaner text and sharper graphics\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDetailed course textures:\u003c\/strong\u003e Fairways, greens, and backgrounds show more realistic detail\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor typical home simulators with 100-120\" screens viewed from 10-12 feet, 4K delivers a noticeably sharper image than 1080p — especially in the simulator UI and shot data overlays.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n    \u003cli\u003eOptoma ZK431ST-B Projector\u003c\/li\u003e\n    \u003cli\u003eAC Power Cord\u003c\/li\u003e\n    \u003cli\u003eRemote Control\u003c\/li\u003e\n    \u003cli\u003eBatteries\u003c\/li\u003e\n    \u003cli\u003eQuick Start Guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eProjector:\u003c\/strong\u003e 3-year limited warranty\u003cbr\u003e\n\u003cstrong\u003eLight Source:\u003c\/strong\u003e Covered under DuraCore laser technology (30,000 hours rated life)\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow close can I really mount this projector?\u003c\/strong\u003e\u003cbr\u003e\nThe 0.496:1 throw ratio projects a 100\" image from approximately 1.3 feet. This is significantly closer than typical short-throw projectors (which are usually 0.6-0.8:1). Use Optoma's distance calculator for exact placement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs 4,100 lumens bright enough?\u003c\/strong\u003e\u003cbr\u003e\nYes, for most home simulators with controlled lighting. If your space has significant ambient light, windows, or you're going commercial-grade, the ZK521ST-B at 5,000 lumens provides additional headroom.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between the ZK431ST and ZK431ST-B?\u003c\/strong\u003e\u003cbr\u003e\nThe \"-B\" model is Optoma's golf simulator variant with integrated Golf Sim picture mode and optimized color profiles for simulation software. Both share the same core specifications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes the GSPro tuning actually make a difference?\u003c\/strong\u003e\u003cbr\u003e\nYes. The Optoma Smart Control app's GSPro-specific tuning optimizes color grading for simulator graphics, making greens, fairways, and sky tones render more realistically than default settings.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes it work with other simulator software besides GSPro?\u003c\/strong\u003e\u003cbr\u003e\nAbsolutely. The Golf Sim picture mode works with any simulator — E6, TGC 2019, Awesome Golf, and others. The GSPro tuning is an additional optimization, not a requirement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use Smart Fit to align the projector?\u003c\/strong\u003e\u003cbr\u003e\nYes. The Optoma Smart Control app uses your phone's camera to detect the screen frame and automatically correct image alignment. This significantly reduces installation effort.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this projector overkill for a smaller screen?\u003c\/strong\u003e\u003cbr\u003e\nFor screens under 100\", you may not notice the full benefit of 4K resolution. The GT2400HDR at 1080p would save money without sacrificing visible image quality on smaller screens.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does it handle dust in a garage environment?\u003c\/strong\u003e\u003cbr\u003e\nOptoma's DuraCore laser technology includes dust-resistant design. While not IP6X rated like some models, the 30,000-hour laser lifespan accounts for normal residential use including garage installations.\u003c\/p\u003e","brand":"Optoma","offers":[{"title":"Default Title","offer_id":49286647677155,"sku":null,"price":1799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0685\/9721\/9555\/files\/01-1781275651_1600x_b4a9e4a0-e332-4e3d-964f-ffc16197d6c5.webp?v=1782008395","url":"https:\/\/golfsimdepot.com\/products\/optoma-zk431st-b-4k-golf-simulator-projector-4100-lumens","provider":"Golf Sim Depot","version":"1.0","type":"link"}